I find the best meds in the uk for columnaris is myxazin by waterlife and pimafix.
Columanris spots take some getting rid of. So myxazin by waterlife no good.
There this med but it will wipe the beneifical bacteria out in the filter.
So I would only treat in isolation.
Furanol 2 by jbl.
Is the fish with the spots flicking and rubbing?
The black fish in the pic might have whitespot.
It's hard to tell in the pics.
Columanris spots take some getting rid of. So myxazin by waterlife no good.
There this med but it will wipe the beneifical bacteria out in the filter.
So I would only treat in isolation.
Furanol 2 by jbl.
Is the fish with the spots flicking and rubbing?
The black fish in the pic might have whitespot.
It's hard to tell in the pics.